Which sign indicates impending upper airway edema?

Which sign indicates impending upper airway edema?

• A. Drooling
• B. Hoarseness
• C. Stridor at rest and muffled voice
• D. No signs of edema

Answer: (C)

Recognizing signs of upper airway edema comes down to noticing when the airway is already narrowing enough to affect breathing and voice. Stridor is a high-pitched, turbulent airflow sound that appears when the airway is constricted. When stridor is present at rest, it means the obstruction is significant even without the patient trying to breathe harder, signaling that edema is progressing toward an airway block. A muffled voice further supports this, because swelling around the larynx dampens normal voice resonance. Together, stridor at rest plus a muffled voice point to substantial edema and imminent risk of airway compromise, making them the strongest indicators among the options. Drooling can occur with airway irritation, but it isn’t as specific for impending edema. Hoarseness indicates some irritation of the vocal cords but can occur with milder inflammation and doesn’t reliably predict worsening obstruction. No signs of edema obviously don’t reflect the dangerous progression described by the combination of stridor at rest and muffled voice.

Recognizing signs of upper airway edema comes down to noticing when the airway is already narrowing enough to affect breathing and voice. Stridor is a high-pitched, turbulent airflow sound that appears when the airway is constricted. When stridor is present at rest, it means the obstruction is significant even without the patient trying to breathe harder, signaling that edema is progressing toward an airway block. A muffled voice further supports this, because swelling around the larynx dampens normal voice resonance. Together, stridor at rest plus a muffled voice point to substantial edema and imminent risk of airway compromise, making them the strongest indicators among the options.

Drooling can occur with airway irritation, but it isn’t as specific for impending edema. Hoarseness indicates some irritation of the vocal cords but can occur with milder inflammation and doesn’t reliably predict worsening obstruction. No signs of edema obviously don’t reflect the dangerous progression described by the combination of stridor at rest and muffled voice.